I finally got to testing my new GPS speedometer for the bus. It works GREAT!

It is a 4" round unit from Speedhut, and uses the GPS satellites to calculate speed. When I figured the cost of replacing my 24 VDC speedometer and sending unit(plus labor to install), it made the GPS one almost an even cost.

I tested it out in my car by just attaching a accessory plug and plugging it in the lighter. Mine has blue backlighting for night and a white face with black numbers for daytime. It also has an odometer, trip odometer, 0-60 trap timer, and 1/4mi timer. It also has a feature that you can keep it powered on all the time to eliminate the satellite acquisition time.

The only challenge I still face is how to turn the backlighting on, since my bus (GM4905) is 24VDC and the speedometer is 12 VDC (which I am feeding with a converter). My current thought is to replace the light switch and add 2 poles to switch the 12 VDC and 24VDC on the same switch. This may require more thinking. For now I am just wiring it so that the backlight is on all the time, which shouldn't hurt.

Sounds like a great thing. Will be more accurate than most speedos. The only drawback I can see is loosing the satelites signal while in a tunnel or such. Not a big deal, except for an overzealous cop...

I bookmarked this when you first mentioned it and am absolutely copying you on this one. Engine driven speedo's are impossible to get accurate enough to matter. I usually drive off the speed on my gps anyhow, might as well make the speed easier to read. Glad to hear it works well, I'm ordering one this week as a result.

OOPS! I forgot the disclaimer--- I have no financial or otherwise interest in this company.(Although I kind of wish I did.) I know that sharing good sources helps us all. I did a lot of research before settling on this one.

I fogot to mention, that on their website, you can actually design what your gauge will look like in real time, so there is no surprise when you open the box.

I will post some pictures when I get it installed in the bus(hopefully tonight).

Gus, I haven't seen one of these in the flesh, but what this appears to me to be is a unit that shows speed and mileage on a speedo face, not on a video-like screen. (And on my Magellan, I haven't found a way to keep the speed listing up; I touch an icon on the touch-screen and the speed listing shows up for about 3 seconds and then goes away. If I read the website right, this acts like a speedo all the time.)

Appears to be a quality unit. I really like the reverse white on black with blk bezel.

I am unfortunately tooo frugal to spring for this. I do like my Garmin GPS in the screen with speed limit & actually speed. Keeps me legal, if only in my mind.

Gus, I had/have a 1995 Magellan aircraft unit and still use it today. It gets me where I need to go, and in turbulence, I can still read the large font, and maneuver the buttons. Kinda the unit for older eyes...

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Experience is something you get Just after you needed it....Ocean City, NJ